Do Native English Speakers Really Use That Many Idioms?

English has thousands of idioms, although nobody knows the exact number because the language is constantly changing. Different English-speaking countries use different expressions, while new ones continue to appear.

That does not mean you need to learn thousands of idioms. Native English speakers don't sit down and memorise them all either. We learn them naturally through family, school, conversations, television, films and everyday life.

When I think about expressions we heard as children, such as "It's not the end of the world" or "Keep an eye on your brother." Nobody sat us down and explained their literal and figurative meanings. We understood them by hearing them in different situations. If you had a problem and your mother told you, "It's not the end of the world," you understood that the problem was not as serious as it felt. She was obviously not talking about the actual end of the world.

This is one reason idioms are easy for native speakers to use but difficult for English learners. We have been hearing them since childhood, while many learners first meet them as vocabulary in a textbook.

Native speakers also use idioms without realising it. We say, "That completely slipped my mind" (I forgot) or "Let's call it a day" (let's stop for today) without thinking about the expressions. They are simply part of the way we speak.

Why Do English Speakers Use So Many Idioms?

Idioms help us express an idea quickly. They can also add emotion, humour or attitude to what we are saying.

For example, we could say:

"I understand what you mean."

In a discussion, however, we might say:

"I see where you're coming from."

The second sentence usually means that I understand your opinion or why you feel that way, even if I don't completely agree with you.

Idioms can also make uncomfortable situations sound less direct. Saying, "We've hit a bit of a roadblock," may sound less negative than saying, "The project has a serious problem."

Idioms don't only explain what happened. They often show how we feel about it.

When You Know the Words but Not the Meaning

Many students tell me that they can understand their English teacher but struggle to understand native speakers in real conversations, films or television programmes.

Native speakers may speak quickly, join words together, use slang or have an unfamiliar accent. Idioms are also a big part of the problem.

You may understand every word in a sentence but still have no idea what the speaker means.

For example:

"Let's play it by ear."

You may know the words play and ear, but they don't help you understand the sentence. The speaker means that they don't want to make a definite plan yet. They will decide what to do depending on the situation.

The same happens with "That rings a bell." Nothing is actually ringing. It simply means that something sounds familiar.

Translating an idiom word for word usually doesn't work. You need to understand the expression as a whole.

Native speakers sometimes forget how strange these expressions sound when taken literally. We have heard them for most of our lives, so they sound completely normal to us.

This is one reason you may understand textbook English but still feel lost during a natural conversation. The English is not necessarily more advanced. It is simply less literal.

Don't Just Memorise the Idiom, Imagine It

I often tell my students not to learn an idiom as if it is simply another vocabulary word. Instead, try to imagine the picture it creates.

Take the expression:

"I'm on the fence."

Imagine someone sitting on a fence with one leg on either side. They have not decided which side to choose. This helps you understand why the idiom describes someone who has not made a decision.

Now think about:

"We've hit a roadblock."

Imagine driving along a road and suddenly finding something blocking your way. You cannot continue until you remove the problem or find another route. This is why we use the expression when something prevents a plan from moving forward.

If you only memorise that "on the fence" means "undecided," you may forget it. If you picture someone sitting between two sides, it becomes easier to remember.

Not every idiom will make perfect sense, but it helps to ask, "What picture does this create?"

Do People Really Still Use Idioms?

Idioms are not dying out, but the ones we use are changing.

Some idioms found in older textbooks are still understood but are not used very often in normal conversation. "It's raining cats and dogs" is a good example. Most native speakers understand it, but many would simply say, "It's pouring."

Someone may still use the older expression to be dramatic or funny. It is not wrong, but it may not be the most natural choice.

Older idioms become less common while new expressions appear. Television, films, social media and popular culture all influence the way we speak.

Younger people may not use all the idioms their parents or grandparents used, but they still use plenty of slang and figurative expressions. Idioms are not disappearing. Like the rest of English, they are changing.

When Should You Use Idioms?

Idioms work well in everyday conversations, personal stories and friendly workplace discussions. Expressions such as "I decided to call it a day" or "I'm still on the fence" sound natural when they fit the situation.

However, clear English is more important when giving medical, legal, safety or technical information. You should also be careful when speaking to international colleagues who may not know an unusual British, American, Australian or South African idiom. Simple English is not bad English. Sometimes it is simply the clearest choice.

Don't use an idiom if you are unsure of its meaning, and don't force several into one answer:

"We need to get the ball rolling, think outside the box and get to the bottom of this before we're back to square one."

It is understandable, but it sounds as though someone has memorised a Business English textbook and is determined to use the whole book before lunch.

One well-used idiom can sound natural. Five in the same answer can sound memorised. Use an idiom because it fits the conversation, not because you want to prove that you know it.

How Are Idioms Used in Humour?

Idioms are often used for humour, especially in American sitcoms.

One common joke is to take an idiom literally. If someone says, "Can you keep an eye on my bag?" another character may pretend that they are being asked to remove an eye and place it on the bag.

Sitcom writers also mix two familiar idioms:

"We'll burn that bridge when we come to it."

This combines "We'll cross that bridge when we come to it" with "Don't burn your bridges." It is funny because the audience recognises both expressions and immediately realises that they have been mixed together.

Characters may also use the wrong idiom because they are nervous, confused or trying too hard to sound clever. Sarcasm works in a similar way. After a meeting goes terribly, someone may say, "Well, that went smoothly."

This kind of humour can be difficult for English learners. You need to understand the expression, the situation and the speaker's tone. This is why you may understand most of the words in a sitcom but still not understand why the audience is laughing. Ask a native speaker when you want to understand these kinds of idioms.

Do You Need Idioms to Sound Fluent?

You don't need to fill every conversation with idioms to sound fluent.

Start by noticing the expressions you hear regularly and imagine the picture behind them. Once you understand an idiom and have heard it used naturally, you can try using it yourself.

For me, understanding idioms is more important than trying to use them all. You need them so that you can follow real conversations and understand what people actually mean.

Use idioms when they fit naturally but remember that sometimes the clearest and simplest sentence is still the best one.

Regular conversational English lessons are the easiest way to hear idioms used naturally and ask what they really mean.